01.Which metal is not used as electromagnet - Copper
02.Radium is chemically similar to - Calcium
03.Which is used as eye wash - Boric acid
04.Commercial Vaseline is derived from - Petroleum
05.The process involving in making soap is - Saponification
06.Neoprene, a synthetic rubber, is made from -2-Chlorobutadiene
07.The second most abundant gas in the atmosphere of the Earth - Oxygen
08.Kerosene was discovered in 1853 by - Abraham Gesner
09.The poisonous gas emitted from the engines of two wheelers - Carbon Monoxide
10.The only substance in that exists in nature in three forms¬ solid, liquid and gas - Water
11.Purest form of water - Rain water
12.Element present in DNA and RNA - Phosphorus
13.The chemical that causes acid rain - Sulphur dioxide
14.Which is also known as ‘paraffin oil’ - Kerozene
15.Gottileb Daimler invented - Carburettor
16.The temperature at which it will continue to bum for at least five seconds after ignition by an open flame is called - fire point
17.The Basel Convention is related to - Hazardous Wastes
18.What is known as 'king of chemicals’ - Sulphuric acid
19.The acid present in eye lotion - Boric acid
20.Which vitamin is also known as Ascorbic acid - Vitamin C
21.The gas used by plants to respire during day time - Oxygen
22.The gas used in factories to make Soda Water - Carbon Dioxide
23.The second least dense metal - Potassium
24.The hardest metal - Chromium
25.Metal that is the best conductor of heat - Silver
26.Stibnite is the ore of - Antimony
27.Ore of chromium - Chromite
28.Magnesium silicate is - Talc
29.Which of the following is the lightest metal - Lithium
30.Carborandum is - Silicon Carbide
31.Carbon, diamond and graphite are together called - allotropes
32.The most important ore of Aluminium is - Bauxite
33.Which of the following is the best conductor of electricity – Silver
34.From which mineral is Uranium obtained - Pitchblende
35.The element present in the largest amount in rocks and minerals is- Silicon
36.Washing soda is the common name of - Sodium Carbonate
37.Tetraethyl lead is used as - Petrol additive
38.The chemial name of Uria is- Carbamide
39.The filament of electric bulb is made of - Tungsten
40.Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of - zeolites
41.Permanent hardness of water can be removed by adding- Washing Soda
42.Bleaching powder is made from - Lime and Chlorine
43.Which of the following metals remains in liquid form under normal conditions - Mercury
44.The formula of Plaster of Paris is- 2CaSO4, H2O
45.The two elements that are frequently used for making transistors are - Silicon and Germenium
46.By fixation of nitrogen is meant- Conversion of atmospheric nitrogen into Useful compounds
47.Liquefied Petroleum gas (LPG) consists of mainly-: Methane, Butane and Propane
48.Which of the following gas is not known as green house gas - Nitrous oxide
49.When water freezes its density- Decreases
50.Atoms of the same element, i.e., having the same atomic number that differ in atomic number, are called- Isotopes
51.The metal that is present in Photo Films is- Silver
52.Which of the following is not a neutral oxide- Sulphur Dioxide
53.The manufacture of iron ore Involves the process of- Reduction
54.Which of the following is in liquid form at room temperature- Francium
55.Which of the following is used in making smoke bombs -Phosphorus
56.Which of the following has the strongest Bleaching property-Chlorine
57.The property of a substance to absorb moisture from the air on exposure is called- Deliquescene
58.Caustic Soda is - NaOH
59.Nitric acid does not react with- Gold
60.Brass gets discoloured in air due to the presence of which gas in air- Hydrogen Sulphide
61.Alkaloid that present in cola drinks- Cafferine
62.Oxygen is manufactured by the fractional Evaporation of- Liquid air
63.Quartz crystals normally used in quartz clocks etc. is chemically- Silicon dioxide
64.The gas usually filled in electric bulb is — Nitrogen
65.Sodium burns in air to give- Sodium peroxide
66.Which of the following elements is non-radioactive – Zirconium
67.Heavy water is - Deuterium oxide
68.Argon gas was discovered by- William Ramsay
69.One fathom is equal to- 6 feet
70.According to Dalton’s atomic theory the smallest particle which
71.The gases used in different types of welding would include - Oxygen & acetylene
72.Formaldehyde is the starting material for the manufacture of- Bakelite
73.The recent atomic weight scale is based on- 6C12
74.Which of the following alloys is used for making magnets - Alnico
75.The phenomenon of '' metamerism“ is Shown by- Methyl propyl ether and diethyl ether
76.The major ingredient of leather is- Collagen
77.Chemically, vitamin C is __ - Ascorbic acid
78.If two liquids have widely different boiling Points, they may be separated by- Fractional distillation
79.Glass is made from the mixture of- Sand and silicates
80.Which of the following can be used as an anaesthetic- Nitrous oxide
81.Which of the following is not an ore of Aluminium - Azurite
82.Epoxy resins is used as- Adhesives
83.Commercial acetic acid is used in the preparation of - Vinegar
84.Most soluble in water is - Sugar
85.One fathom is equal to- 6 feet
86.An ice cube is floating on the surface of water. How will the water level be affected by melting of this ice cube - Water level will remain the same
87.Bromine is — - A red liquid.
88.Who discovered positrons- Carl David Anderson
89.What is the unit for measuring the pitch or frequency of sound Decibel
90.Who measured the charge of an electron at first - Robert Andrews Millikan
91.The metal used in storage batteries - Lead
92.The fastest acting enzyme in the biological kingdom is - carbonic anhydrase
93.Water has maximum density at - 4°C
94.Lightening cause rainfall because- It activate H2O molecule
95.Which one of the following is also called Stranger Gas - Xenon
96.The chemial name of Uria is - Carbamide
97.Nitrification means- Convert the atmospheric nitrogen to effective nitrogen compound.
98.Permanent hardness of water can be removed by adding - Washing Soda
99.The alcohol used in power alcohol is - ethyl alcohol
100.Cell membrane is- semipermeable
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